Hello! I have successfully installed xen and run a domU on a debian squeeze. I have followed step by step the tutorial from Falko here. I can log in my domU by SSH but from the domU I can't connect to anything but the dom0 itself. Can anyone help me to enable network from my domU to the ouside? Here is my xend-config.sxp file: Code: root@namaka-xen:/etc/xen# grep -Evn "^#|^$" xend-config.sxp 145:(network-script 'network-bridge') 176:(vif-script vif-bridge) 193:(dom0-min-mem 196) 197:(enable-dom0-ballooning yes) 207:(total_available_memory 0) 211:(dom0-cpus 0) 226:(vncpasswd '') root@namaka-xen:/etc/xen# Here is my domU.cfg file: Code: root@dom0:/etc/xen# cat domU.cfg # # Configuration file for the Xen instance domU, created # by xen-tools 4.2 on Tue Jan 24 10:59:20 2012. # # # Kernel + memory size # kernel = '/boot/vmlinuz-2.6.32-5-xen-686' ramdisk = '/boot/initrd.img-2.6.32-5-xen-686' vcpus = '1' memory = '128' # # Disk device(s). # root = '/dev/xvda2 ro' disk = [ 'file:/data/xen/domains/domU.telergos.net/disk.img,xvda2,w', 'file:/data/xen/domains/domU.telergos.net/swap.img,xvda1,w', ] # # Physical volumes # # # Hostname # name = 'namaka-vm.telergos.net' # # Networking # vif = [ 'ip=172.23.154.105,mac=00:16:3E:04:8E:7A'] # # Behaviour # on_poweroff = 'destroy' on_reboot = 'restart' on_crash = 'restart' I don't have any xenbr when I run ifconfig: only eth0, peth0, lo and vif1.0 When I run tshark -f '!port 22' I can see ARP requests when I try to ping others hosts than my dom0 but no answer. It looks like these ARP packets ar stuck in the dom0 host. Here is iptables -L output: Code: Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED PHYSDEV match --physdev-out vif1.0 ACCEPT udp -- anywhere anywhere PHYSDEV match --physdev-in vif1.0 udp spt:bootpc dpt:bootps ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED PHYSDEV match --physdev-out vif1.0 ACCEPT all -- namaka-vm.telergos.net anywhere PHYSDEV match --physdev-in vif1.0 I am ways too newbie to fully understand this configuration, but it looks like it is applied at boot time. I have thought that dom0 may not know what to do with domU packets, but do0 is supposed to act as a bridge! So, it should simply relay these packets on its eth0 interface, letting my switch relay them on the others hosts... Thank you for your time and help!